Gray exhaled slowly, a satisfied smile still on his face.
"Okay." He clapped his hands together. "Time to get out of here. And pack some clothes. Urgent."
He turned and began walking through the cave.
Now that he had a body—even an experimental one—movement was different. The ground no longer seemed like just an abstract surface: there was slope, irregularities, small cracks in the rock. Gravity was there. Present. Real.
And this brought an uncomfortable realization.
He was too deep.
The cave wasn't just large—it was ancient. The tunnels branched out at impossible angles, descending more than ascending. Some paths were wide like natural corridors; others, narrow, almost suffocating. Crystals still appeared here and there, but in smaller quantities. The glow diminished as he advanced.
Gray stopped for a moment.
"...Okay." He looked back. There were no marks. No trace. "I definitely don't remember where I came from."
The perception of mana helped.
He closed his eyes and felt the flows. Above, the mana was more diffuse, spread out. Below, too dense. Heavy. Ancient.
"Going up is better than going down." He nodded to himself. "Basic dungeon rule."
He chose an upward-sloping tunnel and followed it.
After a few minutes, something changed.
The silence.
Not that dead emptiness of the initial cave—but an attentive silence. As if the environment were… listening.
Gray stopped immediately.
"...Hm."
He instinctively crouched down, placing his hand on the ground. He activated Predator at low intensity, not to absorb, but to sense. The ability responded with a faint echo.
Something alive.
Small.
Several.
"First encounter." He murmured. "And I'm naked. Classic."
A crackling sound echoed ahead.
Then another.
The sound of scraping stone.
From the shadows of the tunnel, creatures began to emerge. Small. Quadrupeds. Elongated bodies, eyes reflecting the glint of crystals. Something between rats and lizards, with teeth too thin for their size.
[Partial identification.]
[Magical Cave Rats – Rank-F]
Gray relaxed a little.
"Okay." He straightened up. "I can handle you."
The rats squeaked.
They advanced.
Gray didn't run.
The instant the first one jumped, the mist around its body expanded reflexively. Predator activated on its own. There was no spectacle—just efficiency.
The rat was swallowed in mid-air.
Then the second.
The third tried to escape.
It couldn't.
Silence again.
[Predation complete.]
[Analysis in progress.]
Gray took a deep breath.
"...It works." He looked at his own hands. "Great."
He moved forward, now more cautiously.
The cave continued to rise, slowly. The air became less heavy. The glow, more natural. At some point, he felt something new mixed with the mana.
Wind.
Gray smiled.
"...This." He raised his face. "Could this be an exit?" he wondered, but quickly felt it was too close and there was still too much ceiling above him.
Gray followed the wind.
With each step, the current became clearer—not strong, but constant. Air coming from above. Far above. Still, it was the first real confirmation that this place was not a sealed tomb.
Then he heard.
A dry thud.
Then a sharp screech.
Gray froze and leaned against the tunnel wall, pure instinct. The mist around his body receded, darkening obediently. He moved forward just enough to peek.
The chamber ahead was wide, with a high ceiling and natural fissures through which the pale light of the crystals trickled. In the center, two creatures fought.
A gigantic spider, its body glossy black, its long legs digging into the rock. Its abdomen pulsed with greenish veins—concentrated venom. Each movement left sticky threads in the air.
On the other side, a colossal centipede, more than a meter long, dozens of segments covered in rigid plates. Its mandibles snapped, and a purple liquid dripped from them, corroding the stone where it fell.
[Identification.]
[Deep-Sea Venomous Spider – Rank-D]
[Rock-Acid Centipede – Rank-D]
Gray held his breath. "…Rank-D." He murmured. "Okay. Looks like we're out of the tutorial."
The two collided again.
The spider shot thick webs, trying to immobilize it. The centipede writhed, losing two segments when it scraped against a crystal ledge, but responded by biting. The acidic venom fumed as it hit the spider's abdomen, which screamed in a high-pitched, almost metallic sound.
Gray analyzed quickly.
— They're both wounded.
— They're both focused on each other.
— And neither is aware of me.
The predator reacted, hungry, but he held back.
"Calm down," he thought. "Rank-D conscious… high chance of failure."
He took a half-step back, assessing his options.
If he waited, one of them would die. The winner would be exhausted. Unconscious? Maybe not—but wounded enough to reduce the risk.
The fight escalated.
The spider managed to climb the wall and launched itself from above, sinking its chelicerae into the centipede's body. The green venom spread quickly. The centipede thrashed violently, cracking the ground, until it slammed the spider against a rock pillar.
The impact was brutal.
The spider fell. Its legs trembled. Its abdomen slowly shrank.
Partial silence.
The centipede remained standing… for three seconds.
Then its entire body stiffened and collapsed, its segments hitting the rock one by one, until it stopped.
Total silence.
Gray waited another ten seconds.
Nothing moved.
"…Okay." He exhaled. "Now that's better."
He cautiously approached, activating Predator in minimum mode, like a tongue tasting the air.
[Unconsciousness detected.]
[Residual life: low.]
Using Predator in this way was extremely clever. He could analyze what he was eating beforehand and decide if it was worthwhile. He could also check if he could do anything about it beforehand. This was a huge advantage!
Gray raised his mist hand, smiling. "First real loot."
The mist opened and advanced, swallowing first the spider, then the centipede, without resistance.
[Predation complete.]
[Analysis in progress.]
The interface flashed.
[Biological poison – acquired.]
[Corrosive acid – acquired.]
[Chitinous structure – stored.]
Gray felt a new weight settle in his stomach. Yes, in a way, he felt something weighing on his body, although absolutely nothing had changed.
He then questioned, "Is it possible to obtain any abilities?"
[Negative. Due to the lack of interaction, it has become impossible to analyze the abilities. It is recommended that you engage in combat to obtain information about the abilities and have a greater chance of obtaining new abilities.]
"I understand… it's quite a limitation. After all, a being that possesses this ability is already a great danger. If it had no limitations, that primordial demon would clearly be alive." He said to himself…
"No, I'm wrong." He remembered, Predator wasn't that demon's ability; that demon possessed the ultimate evolution of Predator. He had the ultimate ability [God of the Void, Azathoth].
"Anyway, this limitation will disappear. As long as I get stronger." He concluded, that idiot who had been crazy and hysterical a while ago was slowly fading away as he saw what this world was.
And in a few minutes, his climb continued.
He passed through several narrow caves, always focusing on climbing, higher and higher.
Gray emerged from the last narrow tunnel and stopped.
The cave ahead was different from all the others.
The ceiling opened into a tall, irregular natural vault, with cracks through which light truly entered—not magical glow, but filtered external light. In the center, a lake of clear water reflected soft shades of blue and white. The banks were of damp earth, with small tufts of grass and hardy weeds sprouting between the stones.
Gray remained silent for a few seconds.
"...Earth." He crouched down and touched the ground. "Real earth."
That meant one thing.
"I'm closer to the surface."
He approached the lake carefully. The perception of mana there was different—less concentrated, more natural, in constant flow. Gray knelt and plunged his hand into the water.
Cold.
Real.
He brought his hand to his mouth and drank.
Sweet.
No metallic taste. No salt.
"...Fresh water." He nodded. "So it's not the coast. Good."
He drank some more, feeling something he hadn't experienced since waking up in that world: normalcy. His body responded well. Stable. His mana didn't react strangely.
Then—
Bong!
Gray froze.
Bong! Bong!
He slowly turned his head.
On the opposite bank of the lake, something blue was awkwardly jumping towards him. A small, gelatinous, translucent creature with a darker core in the center. Each jump made a wet, elastic sound as it touched the ground.
[Identification.]
[Blue Slime – Rank-F]
Gray blinked.
"...A slime."
The slime jumped again.
Bong!
It stopped about two meters from him.
It didn't attack.
It didn't arm itself.
It just... stayed there. Undulating slightly.
Gray frowned.
"...You don't seem hostile."
The slime tilted its body, as if curious.
"Bong?"
Gray relaxed his shoulders.
"Okay." He murmured. "First monster that doesn't try to kill me. Positive point."
Predator reacted slightly, but he ignored it. Instead, he activated the ability in minimal reading mode.
[Hostility: None.]
[Status: In Love.]
[Threat: None.]
"?" Gray read again, "In Love?" He questioned, before feeling something touch his penis.
Yes, she…
"!!!" Gray jumped back, his heart racing as if he'd received an electric shock—his new body reacting with an instinctive jolt he hadn't expected.
"What the hell is this?!" he yelled, stumbling on the damp edge of the lake and falling on his backside in the grass, his eyes wide and fixed on the slime.
The little blue jelly had crept closer during his reading, and now a pseudopod—an improvised arm of translucent goo—lazily stretched from its body, lightly brushing against his semi-erect penis.
It wasn't an aggressive grip; it was more like a curious caress, cool and moist, vibrating slightly with internal bubbles.
The touch was icy at first, but warmed quickly, almost comforting, like a bath of living foam.
"Bong? Bonggg~," the slime made, tilting its "body" as if apologizing, but without recoiling.
Instead, it undulated closer, its inner core pulsing in a subtle pinkish hue—perhaps excitement? The slime slowly molded itself, forming a kind of fluffy "mouth" on the front, licking the air in his direction.
Gray blinked rapidly, still on the ground, his penis betraying the shock with an involuntary erection—his experimental body reacting to the new sensory stimulation.
"Wait... 'in love'? Is that literal?! Get out of here, you horny slime!" he grumbled, waving his hands away.
[Affinity detected.]
[The unique ability [Latent Monstrous Bond] is helping your body create intimate bonds with the "Slime" species. The "Nameless" Slime has feelings of Devotion and Domination.]
While he read the message.
The slime jumped towards him while he was distracted.
bong!
"What?" He questioned, reading the message… "Ah… harem system… I get it, okay, I understand but—" He was interrupted by feeling something—
A thin layer of slime enveloping the tip of his penis, massaging gently, like a living vibrator. New sensations exploded: gentle suction, growing internal heat, bubbling textures rubbing against the glans. Gray groaned involuntarily.
"Ah, shit… stop it… or not… wait, what the hell!~"
He sat up straight, debating internally. Kill? Absorb? Let it go? The slime seemed harmless, and for the first time since the cave, something there was… friendly?
"Okay, slime. If you want to play, but no crazy stuff," he murmured, curious despite the initial shock.
The slime responded by pulsing harder, enveloping more of his entire penis now, schlurp-schlurp, pumping rhythmically while the core glowed.
Gray tilted his head back, panting, "Damn... this is better than I imagined for a Rank-F... Ah, fuck!~" Gray groaned louder, his hands gripping the damp grass as the slime intensified its "embrace."
The blue goo expanded slowly, fluid and obedient, enveloping not only his entire cock, from the thick base to the swollen glans, but lazily descending to his balls, molding itself like a living, pulsating glove.
Sclurp... schlurp...!
The sound was obscene, internal bubbles bursting in rhythmic vibrations that massaged every vein, every sensitive inch, squeezing and releasing in perfect waves.
"Ahh... fuck, you naughty slime... you're sucking me all up!" he growled, his hips involuntarily thrusting forward, fucking the slimy pseudopod.
Her insides were warm now, viscous like a lubricated anal hole, sucking with a natural suction that seemed tailor-made for his cock.
The pink core pulsed faster, like an excited heart, and Gray swore he saw thin veins of mana flowing from the slime into his body.
[Monster Bond activated: +10% affinity. Growing devotion.]
He tried to resist for a second, rationally:
"Wait... this is dangerous... S-slow down, damn it!" but the sensation was overwhelming. His balls were completely engulfed, fresh slime brushing against his wrinkled skin, vibrating softly like an erotic massager.
"Crazy... it's squeezing my balls... ahn, fuck!", he groaned, one hand instinctively going to the slime's head—or where the head would be—squeezing the soft slime that molded to his fingers like responsive jelly.
The slime "purred" with a vibrant bonggg~! accelerating the pumping.
schlurp-schlurp-schlurp!
Squeezing harder at the base to block the orgasm, prolonging the pleasure. Gray arched his back, his abdomen contracting,
"I'm going to... I'm going to cum... take it, you blue whore!", he roared, spurting forcefully inside her.
Splurt! Splurt! Splurt!
He saw everything…
The thick, white semen exploding inside the translucent core, floating in milky strands around the core, mixing with the blue goo in a hypnotic swirl.
Bubbles of semen rose and burst, the core slowly absorbing them, the pink color intensifying to a naughty magenta.
"Look at that... she's drinking it all…", Gray murmured, panting, watching the semen slowly disappear, dissolving into the goo like sugar in hot tea.
[Nameless Slime is now loyal to its new master.]
[Basic Regeneration Skill unlocked (Rank-F - Passive!)]
[[Latent Monstrous Bond] identified that Nameless Slime is fully in favor of joining the user. By establishing a bond, you will unlock the "Slime" Race]
[Name it to strengthen the bond and establish ties]
Gray read those messages and didn't know what to think. After all, he had just used a Slime as an Onahole and ejaculated inside it without holding back at all.
The worst part? The Slime liked it and even devoted itself to his penis… Yes, in a way, that was exactly it.
"Why—" He tried to think, but hit his head, "What the hell. The first friendly monster I've ever encountered, I've already had sex with? I don't even know if that's sex!" He said, returning to his hysterical state.
[Warning. Yes, you just had sexual relations with the "Nameless" Slime]
"Yes, yes, I understand." He waved his hand, throwing the System box away as he stood up.
He was no longer hard, but he kept looking at the Slime as he circled her cautiously, after all… She was a pervert!!
He looked at the Slime, who had a "I know you liked it! Don't abandon me" look on her face.
He put his hand to his head, scratching his hair, "Oh crap… what do I do?"
The Slime looked at him, forming two huge, pleading eyes, basically saying, "Take responsibility!! Don't leave me here! I'm cute!"
He sighed, "You're going to follow me, aren't you? Jump once."
Bong!
"You really won't leave me alone, even if you die. Right?"
Bong! Bong!
[Warning. The Slime race is quite varied, and has extremely useful regeneration abilities for the user. It is recommended that you accept the little Slime.]
"I know, I know," he said, looking suspicious. "You're a harem system, of course you want it."
[Correct.]
"Don't even hide it anymore." He said, and turned to the Slime that was already very close to his penis. "Whoa, whoa, whoa. Calm down." He said, moving away.
He looked around and saw that everyone was against him… "Alright." He said, and the Slime jumped several times. "I need to think…" He said and looked around, "What name would I give it…"
He remembered an anime he saw about monsters… "Its name will be…" He thought properly.
"Its name will be Nilou," Gray said confidently.
...
Note: Well, he might seem like an idiot at first.... To be honest, I believe he starts to improve around chapter 5. I ask for a little patience!
The first chapters will be a bit longer.
Don't forget to add the work to your library and support me with Power Stones — it makes a big difference! Also, for every 300 Power Stones I will post an extra chapter!
I'm counting on you 💙